WO1987000868A1 - Container for surface treating, such as hot-dip galvanizing goods - Google Patents
Container for surface treating, such as hot-dip galvanizing goods Download PDFInfo
- Publication number
- WO1987000868A1 WO1987000868A1 PCT/SE1986/000350 SE8600350W WO8700868A1 WO 1987000868 A1 WO1987000868 A1 WO 1987000868A1 SE 8600350 W SE8600350 W SE 8600350W WO 8700868 A1 WO8700868 A1 WO 8700868A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wall
- rod
- container
- goods
- container open
- Prior art date
Links
- 238000005246 galvanizing Methods 0.000 title claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 16
- 239000011701 zinc Substances 0.000 claims abstract description 16
- 230000005484 gravity Effects 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0032—Apparatus specially adapted for batch coating of substrate
- C23C2/00322—Details of mechanisms for immersing or removing substrate from molten liquid bath, e.g. basket or lifting mechanism
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
Definitions
- Container for surface treating such as hot-dip galvanizing goods
- the present invention relates to a container for hot-dip galvanizing, comprising a bottom and a wall with a number of holes permitting through- flow of zinc.
- a container for hot-dip galvanizing, comprising a bottom and a wall with a number of holes permitting through- flow of zinc.
- Such a container is normally provided with a handle enabling it to be moved from place to place.
- the container is filled with goods and immersed in a zinc bath with the aid of lifting gear, where the zinc can influence the goods. After immersion in the zinc bath the container is lifted and generally subjected to rotation to remove any zinc which has not adhered to the goods, through the perforated wall.
- the container is then inverted to remove the contents.
- the coating is also damaged as described above even if the container has a convex bottom with a central rod extending therefrom.
- a sliding body is provided along the rod, said body being joined to the wall of the con- tainer.
- SE 8101170-2 describes a container of the latter type but differs there ⁇ from in that the container with bottom can be placed on the ground and the surrounding wall can be raised when the bottom is stationary so that goods can be transferred to ground level without falling.
- the sliding body is provided with a locking device so designed that when wall and bottom are in contact with each other the locking means can come into operation.
- the locking means cooperates with the central rod. During emptying of the container, the locking device is out of function and the lower wall edge and bottom part company.
- the present invention constitutes a modification of the container for hot-dip galvanizing described in the above-mentioned Swedish patent specification SE 8101170-2. This modification makes better use of the centrifugal forces upon rotation of the container. This is particularly
- the present invention also counteracts the tendency of the goods to mount the wall during rotation, as well as reducing splashing as a result of spitting. Spitting is caused by the formation of gas bubbles when damp goods, for instance, are immersed in the zinc bath, and causes the hot zinc to splash out of the container. It is therefore desirable from the safety point of view to reduce this tendency.
- the container wall in the following termed the outer wall, is in the form of a truncated cone diverging towards the bottom.
- the container according to the invention is provided with an inner wall arranged around the central rod and permanently joined to the bottom, the space defined between these parts communicating with the surrounding atmosphere during the hot-dip galvanizing treatment via apertures in the upper, part of the inner wall, in the central rod and/or In the bottom.
- the inner wall causes the centre of gravity for the goods to be hot-dip galvanized to be moved further out towards the periphery.
- the gyroscope force has a "calming" effect on the pendulum.
- a pendulum one metre in length has a sweep time of
- Movement B will be superimposed on movement C since the plane of movement in B is arbitrary and variable. If, for instance, the pendulum plane B is tangential to the conical movement C and the pendulum moves in the same direction in both partial movements, there will be an increase in movement which will give the centre of gravity a strongly excentric path, i.e. the amplitude of the flat pendulum movement will increase, i.e. the flat pendulum movement will increase since the sweep time Is constant.
- the distance between centre of gravity and suspension point in a loaded container must be at least twice the diameter of the load in order to ensure stability and thus safe operation of the means.
- Figure 1 shows a container according to the invention, In which the bottom and outer wall are in contact with each other,
- Figure 2 shows a container according to Figure 1 in which the bottom and outer wall are spaced from each other,
- Figure 3 shows an alternative embodiment of the bottom
- Figure 4 shows a container according to the invention provided with an inner wall.
- FIG. 1 is an outer wall having a number of perforations.
- the outer wall Is conical.
- Two legs 2 and 3 extend from the upper edge of the outer wall 1 and are connected by a yoke 4.
- a sleeve-like part 5 is provided centrally in the yoke, this being provided at the upper end with a lifting eye 12.
- the sleeve-like part 5 is fitted over a central tube or rod 6 having rectangular cross section. Other polygon cross sections are also feasible.
- the walls of the rod 6 have perforations 7.
- the rod 6 is also provided with a collar 8 to prevent material from unintentionally entering the opening of the sleeve-like part 5.
- the yoke 4 is provided with a locking device 9 to lock the sleeve 5 to the rod 6.
- Locking is effected with the aid of an arm influencing a transversely movable dowel to enter one of the apertures in the central rod 6.
- the free lower edge of the wall 1 abuts a domed bottom 13.
- the periphery of the bottom 13 may terminate in an annular section 14.
- the orifice of the central rod 6 is on the lower side of the bottom 13 thus offering free passage between the lower side of the bottom and the cavity of the rod 6.
- the lower periphery of the outer wall 1 of the container according to Figure 1 abuts the bottom 13.
- the locking device is also shown in locking position so that the bottom 13 and wall 1 are stationary in relation to each other.
- the container can now be filled with the desired quantity of goods and then immersed in a medium which is allowed to influence the goods in the container.
- the medium may be a zinc bath and the goods may constitute metal articles which are to be galvanized.
- the medium passes through the perforations in the outer wall 1 , thus reaching the goods in the container.
- the container is lifted and subjected to rotation In order to remove medium which has not adhered to the goods or unused zinc.
- the medium or zinc is removed through the perforations in the outer wall 1.
- Figure 4 shows a container provided with an inner wall 15.
- This inner wall 15 is located Inside the outer wall 1 and is concentric therewith. It should be evident that the inner wall may be cylindrical or optionally conical.
- the lower periphery of the inner wall 15 is permanently joined to the bottom 13 and its upper edge is in this case joined to the central rod 6.
- the upper part 17 of the inner wall 15 has different conicity from the lower part.
- the rod 6 then communicates with the surrounding atmosphere at the bottom 13 and possibly also at the top of the rod. Alternatively, communication with the surrounding atmosphere may be obtained through openings in the bottom 13 and/or openings in the upper part 17 of the inner wall.
- the goods to be galvanized are placed in the space between the two walls. With this construction the goods will be subjected to higher centrifugal force than in the alternative without the inner wall.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8503651-5 | 1985-07-31 | ||
SE8503651A SE8503651L (en) | 1985-07-31 | 1985-07-31 | CONTAINER FOR SURFACE TREATMENT LIKE HEAT ZINCING OF GOODS |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1987000868A1 true WO1987000868A1 (en) | 1987-02-12 |
Family
ID=20360996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1986/000350 WO1987000868A1 (en) | 1985-07-31 | 1986-07-31 | Container for surface treating, such as hot-dip galvanizing goods |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0244423A1 (en) |
AU (1) | AU6198986A (en) |
SE (1) | SE8503651L (en) |
WO (1) | WO1987000868A1 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2698198A (en) * | 1949-01-06 | 1954-12-28 | Mulon Jean | Bucket provided with an opening bottom |
US2837369A (en) * | 1955-11-07 | 1958-06-03 | Stopps Alfred Leslie | Bottom opening bin |
DE1063436B (en) * | 1958-02-25 | 1959-08-13 | Elmasch Bau Sachsenwerk Veb | Device for the production of melt coatings, in particular made of metal, on small parts in the dipping process |
US3753762A (en) * | 1972-05-22 | 1973-08-21 | American Spin A Batch Co | Method of galvanizing |
DE2610625A1 (en) * | 1976-03-13 | 1977-09-15 | Guy Delevallee | Surface treatment of metal or plastics parts - in perforated drum rotating on vertical axis and immersed in treatment baths |
GB2065720A (en) * | 1979-12-21 | 1981-07-01 | Lionweld Ltd | Article holder for use in galvanising process |
WO1982002903A1 (en) * | 1981-02-23 | 1982-09-02 | Flink Ernst Ake Ragnar | Means in containers comprising a bottom and a peripheral wall |
SE425803B (en) * | 1981-02-23 | 1982-11-08 | Nils Ake Beckman | Upwardly open container for the hot galvanization of objects |
EP0146788A2 (en) * | 1983-11-29 | 1985-07-03 | Rasmet Ky | Apparatus for coating steel objects with an alloy of zinc and aluminium |
-
1985
- 1985-07-31 SE SE8503651A patent/SE8503651L/en unknown
-
1986
- 1986-07-31 AU AU61989/86A patent/AU6198986A/en not_active Abandoned
- 1986-07-31 EP EP86904974A patent/EP0244423A1/en not_active Withdrawn
- 1986-07-31 WO PCT/SE1986/000350 patent/WO1987000868A1/en not_active Application Discontinuation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2698198A (en) * | 1949-01-06 | 1954-12-28 | Mulon Jean | Bucket provided with an opening bottom |
US2837369A (en) * | 1955-11-07 | 1958-06-03 | Stopps Alfred Leslie | Bottom opening bin |
DE1063436B (en) * | 1958-02-25 | 1959-08-13 | Elmasch Bau Sachsenwerk Veb | Device for the production of melt coatings, in particular made of metal, on small parts in the dipping process |
US3753762A (en) * | 1972-05-22 | 1973-08-21 | American Spin A Batch Co | Method of galvanizing |
DE2610625A1 (en) * | 1976-03-13 | 1977-09-15 | Guy Delevallee | Surface treatment of metal or plastics parts - in perforated drum rotating on vertical axis and immersed in treatment baths |
GB2065720A (en) * | 1979-12-21 | 1981-07-01 | Lionweld Ltd | Article holder for use in galvanising process |
WO1982002903A1 (en) * | 1981-02-23 | 1982-09-02 | Flink Ernst Ake Ragnar | Means in containers comprising a bottom and a peripheral wall |
SE425803B (en) * | 1981-02-23 | 1982-11-08 | Nils Ake Beckman | Upwardly open container for the hot galvanization of objects |
EP0146788A2 (en) * | 1983-11-29 | 1985-07-03 | Rasmet Ky | Apparatus for coating steel objects with an alloy of zinc and aluminium |
Also Published As
Publication number | Publication date |
---|---|
EP0244423A1 (en) | 1987-11-11 |
SE8503651L (en) | 1987-02-01 |
SE8503651D0 (en) | 1985-07-31 |
AU6198986A (en) | 1987-03-05 |
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